Hardin-Simmons University. Range Rider, Volume 21, Number 1, September-October, 1967, periodical, September 1967; (https://texashistory.unt.edu/ark:/67531/metapth116978/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .